OCHA Mali recently added the following dataset to HDX. It shows the number of IDPs in Mali by region over a two year period, from September 2012 to July 2014. IDPs in Mali peaked at 472,250 in June 2013. The northeast region of Kidal currently has the most IDPs.
The data on IDPs is compiled by IOM through their Displacement Tracking Matrix exercise and through field evaluations carried out by the partners of the Commission on Population Movements.
Download the data from HDX